Prisons are running about 2,000 places short of full

4 September 2026 · Figures in the text were correct on this date; the charts below are drawn live and will move as new periods are published.

In the week beginning 24 August 2026 the prison population of England and Wales was 86,843 against a useable operational capacity of 88,937 — headroom of 2,094 places, or 2.4%.

The Ministry of Justice publishes the prison population of England and Wales weekly, alongside the estate's useable operational capacity. In the week beginning 24 August 2026 the population was 86,843 and capacity was 88,937 — 2,094 unoccupied places, or 2.4% of the estate.

Headroom that thin matters because the two lines move on different timescales: the population can rise by hundreds in a week after a sentencing change or a public-order event, while capacity moves only as fast as cells can be built, reopened or taken out of service.

Both series come from the same weekly MoJ publication, so the gap is simple subtraction between two published numbers, never an estimate. The charts below track each line live.